With double progression volume can (in theory, depending on rate of strength gain) increase session to session. Even 1 additional rep one week later is an increase in overall volume. So in terms of overall volume (which again is what we are after) double progression will generally allow faster progress. Oct 20, 2009 · Double Progression Double progression is the purposeful increase of two training variables from one workout to the next. For example…if you performed one set of bench presses at 200 pounds for 8 reps today, and the next time in the gym you increased reps on your first set AND added a second set, you utilized double progression.